you don't know the fans here man, biggest wagon jumpers ive ever seen. most friends i watch the games with changed their team 3-4 times as long as ive known them

Canada too. Or, maybe more accurately, Toronto. There's a lot of Steelers fans in Toronto, but when it's football season, our city turns into PatsNation and it's really not even close. There's a ton of bandwagon jumpers here too and lately, over the past two seasons, we're suddenly all 49ers fans.

Harvard College Sports Analysis Collective digs deeper into the Facebook data to discover America's most popular football teams. No surprise that the Steeles and cowboys are in their own league when it comes to nationwide popularity

There's huge disparity across the NFL. For example, the Cowboys have more than 12 times as many fans as the St. Louis Rams. But it may be unfair to look at these extreme differences as teams like the Cowboys and Steelers are almost outliers. The Steelers have over one million more fans than the Patriots, despite the fact they are only one spot ahead in the "like'" rankings.

Below is a graph and a chart showing the percentage of football fans within 50 miles of the home team's stadium who are fans of that team.